Bicycle frame

FIG. 1 is a left-front perspective view of a bicycle frame according to our novel design;

FIG. 2 is a right-front perspective view of a bicycle frame according to our novel design;

FIG. 3 is a left-rear perspective view of a bicycle frame according to our novel design;

FIG. 4 is a right-rear perspective view of a bicycle frame according to our novel design;

FIG. 5 is a left side view of a bicycle frame according to our novel design;

FIG. 6 is a right side view of a bicycle frame according to our novel design;

FIG. 7 is a front view of a bicycle frame according to our novel design;

FIG. 8 is a rear view of a bicycle frame, according to our novel design;

FIG. 9 is a top view of a bicycle frame, according to our novel design; and,

FIG. 10 is a bottom view of a bicycle frame, according to our novel design.

The broken lines shown in all views of the drawings are for illustrative purposes only and form no part of the claimed design.